Mock problem in EPEL 5?

Hi, I am seeing a package build fail in EPEL 5 that builds fine in EPEL6 and Fedora. Specifically there seems to be a problem writing to /sbin in the build root: Installing Shorewall Version 4.4.22.3 install: cannot create regular file `/sbin/shorewall': Permission denied ERROR: Failed to install -T -o root -g root -m 0755 shorewall /sbin/shorewall See http://koji.fedoraproject.org/koji/getfile?taskID=3291843&name=build.log Any ideas? Cheers, Jonathan